why would you choose Janna over Lulu?
Say you're tired of healing and want to be a shielder support instead. Why would you pick Janna over Lulu? I fully admit that Janna's Q is much stronger than Lulu's Q, but Lulu's ult is a knockup too and it's a point and click, plus Lulu's W is far better, Lulu's e scales 10% less, but the shield amounts are the exact same, the bonus is pretty much the same, Janna grants AD, Lulu grants her passive to the target, and lulu's E is on a flat 10 second cooldown while it takes 5 points into Janna's shield to get it down to 10 seconds.
So yeah, why play Janna instead of Lulu?